YJC油浆泵中高铬合金叶轮、泵过流通道耐磨复合铸造层研制
YJC유장빙중고락합금협륜、빙과류통도내마복합주조층연제
Research and development of high-chrome alloy vane and wearable compound cast larger of pump overflow chute in YJC oil slurry
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